Most of the time a person would have to be on the look out for these situations (which hardly any of us are). Usually by the time you notice a person has a weapon, they are so close it's difficult to get to your weapon in time. I do carry though, just not in the park. Nothing wrong with it. I just think that more than a permit class is needed. Do you know the proper grip? Center mass or head shot? What is the difference between cover and concealment? What is the maximum effective range of your weapon? One roiund down range or empty the clip? Why? Is the guy "near" or "far" and what are these distances? There are a ton of other questions. Others know much more than I do. Seek them out and learn from them.